Safety device for riveting machines



Sept. 27, 1927..

H. c. VANCE SAFETY DEVICE FOR RIVETIN'G MACHINES Filed June l6 ,1924 2 Sheets-Sheet l WSW Sept. 27,- 1927.

H. C. VANCE SAFETY- DEVICE FOR RIVETING MACHINES Filed June 16, 1924 2 Sheets- Sheet 2 ift MN Tu q mNmu 3n uelL I Patented Sept. 27, 1927.

UNITED STATES PATENT OFFICE.

HOWARD c. VANCE, or nnrnorr, MICHIGAN, ASSIGNOR T WHITEHEAD & KALES COM- PANY, or RIVER ROUGE, MICHIGAN, A CORPORATION on MICHIGAN. I

SAFETY DEVICE FOR RIVE'IIING MACHINES.

Application filed June 16, 1924. Serial No. 720,439.

This invention relates generally to power operated machines and refers more particularly to safety devices therefor.

One-0f the essential objects of the invention is to provide a machine of this type In which the drive mechanism for a suitable punch or die is provided with yieldable means for cushioning the latter when working on thicker material than usual.

Another object is to provide simple and effective means for adjusting the die or punch upon its supporting carriage for engagement with work of various kinds.

WVith the above and other objects in view the invention consists of certain novel features of construction, combinations and ar rangements of parts as will be more fully described and particularly pointed out 1n the appended claims.

In the accompanying drawings: I

Figure 1 is a side elevation of a machine embodying my invention;

Figure 2 is a top plan view of a portion of the machine;

Figure 3 is a side elevation of'the construction shown in Figure2.

- Referring now to the drawings in which like characters of reference designate corresponding parts throughout the .several views, the numeral 1 designates a suitable press having a frame 2 that is preferably provided atone end with an anvil. Slidably mounted on the frame 2inalignment with the anvil is a carriage 4 that is adapted to be reciprocated by means of the head 5 of a rocker 6. This rocker is swingingly mounted intermediateits ends on a shaft extending transversely of the frame 2 and is provided at opening 8 which receives a block 9 rotatably mounted on a crank 10 of a suitable crankshaft extending transversely of the frame 2.

Any suitable clutch controlled means not shown) may be employed for driving the crank shaft so that the block 9 will actuate the rocker 6 for reciprocating the carriage 4.

As shown, the head 5 of the rocker preferably extends upwardly between a pair 0 complementary blocks 11 and 12 respectively that are located in a longitudinally extending slot 13 in the carriage 4 and have curved faces 14 1 for engagement with the correspondingly shaped sides of the head 5. The

. rear fiat face 15 of the block 11 bears again t afplate 16that i secured-techscarria e-at its lower end with an'elongated the rear end of the slot 13, while the forward fiat face 17 of the block 12 bears against a plate 18 that has a transversely extending rib 19 engaging a transversely extending groove 20 in a block 21 located in the slot 13. The block 21 is preferably provided at its upper end with laterally extending flanges 22 that rest on'the upper side bars 23 of the carriage 4. F or holding the block 21 in the slot 13 there is a cover plate 24 that is bolted to the side bars 23 of the carriage and 1s provided with a transversely extending recess 25 for receiving the upper end and laterally extending flanges of the block 21. To prevent dust, dirt, etc., from dropping down between the head 5 of the rocker and the blocks 11 and 12, I preferably provide a suitable cover plate 26 that engages a suitable recess 27 at the rear end. of the cover 24 and is preferably held in position by a screw 28 that passes through a suitable keyhole slot 29 in the cover plate and threadedly engagesthe top of the carriage'4.

Located at the forward end of the slot 13 in the carriage is a block 29 that preferably correspondsin shape-to the block 21 and is supported by laterally extending flanges 30 that rest on the side bars 23 of the carriage 4. A suitable bracket 31 is bolted to the carriage 4 for holding the block 29 in the slot 13. i

'In" order that the'machine may be used for either punching or riveting there is a plate 32 that is 'securedto the forward end of the carriage and is provided with an opening '33 for receiving the shank 34 of a suitabledie or punch 35. For cushioning the die or punch 35 when the carriage 4 is moved'forwardly, I preferably provide a heavy coil spring 36 that is located between cup-shaped members 37 and 38 respectively mounted on a vertical bolt 39. As shown, the uppercup-shaped member 37 is secured to the bolt 39 bymeans of the nuts 40 and 41 respectively, while the lower cup-shaped member 38 is sleeved upon the reduced porf tion 42 of a block 43. This blockis sleeved on thebolt 39 and is normally: held by the spring 36 upon a block 44 that is threaded onto the bolt 39 at the lower :end thereof. For separatingthe'blocks 43 and 44 respec tively against the tension df the spring 36, I preferably provide arpluralitybf plates 45 thatrhave rounded ends 46 engaging 'cor'- respondinglv shaped grooves 47 in the oppothat the spring 36 will provide the desired site sides of the blocks 43 and 44 respectively and in the opposed faces of the blocks 21 and 29 respectively. As shown, the upper'plates 45 incline downwardly from the block 43 to the blocks 2-1 and 29", while the lower plates 45 preferably incline upwardly from the block 4.4 to the blocks 21' and '29 respectively. Thus, with this construction the forward movement of the head 5 of the rocker will be transmitted to the carriage 4 and die through the block 12, plate 18, block 21;, plates; and blocks 43, 44 and 29 respectively, while the rearward movement of the head 5 will be transmitted to the carriage 4 through the block 11 and plate 16.

For adjusting the die 35 on the carriage 4, Iv preferably provide a wedge-shaped member 48. that is adjustable. vertically in F a suitable opening 49 in the carriage. 4.

of the opening 49. For adjusting the wedge-shaped member 48 vertically there is a bolt 53 that has a swivel connection at its lower end with the wedge-shaped member 48 and threadedly engages a crossbar 54 having hooked end portions 55 engaging suitablebolts 56, projecting upwardly from the carriage 4. This cross bar 54 preferably restson tubular spacers 57 surrounding the bolts 56 and is held in position by nuts 58 that threadedly engage the bolts 56.

In use, the die or punch 35, is first ad- 'justed by the. bolt- 53 outwardly or inwardly the proper distance with respect to the plate 32 at the for-ward end of the carriage 4, to,

perform its work; hen the material is placed in proper position against the anvil 3, the clutch mechanism (not shown) con- I trolling the rotation of the crank shaft 10,.

may be operated so. that the rocker 6 will be swung on the shaft 7. When the material to be: worked upon is the proper thickness the forward swinging movement of the rocker head 5 will cause the carriage 4 and die 35 to be moved forwardly without affecting the spring 36, however, when the mate rial is thicker than usual the forward stroke of the carriage 4 will be shortened by the material: before the forward movement of" the rocker head 5 is completed. Hence, the blocks 43 and 4,4 respectively will be sepa rated by the diverging plates 45 against the tension, of the spring 36.

Thus, from the foregoing description it will be readily apparent that the adjustment of the die or'punch 35 outwardly or in wardly with respect to the forward end of the carriage 4 will depend upon thev kind of material to be worked, upon. After this adjustment is once, made it; will; be apparent rial varies in "thickness.

going description the nature and advantages of the invention will be readily apparent,

I desire to have it understood that I do not,

limit myself to what is herein shown and described, and that; such changes may be resorted to when desired as fall within the scope of what is claimed.

l tThat I claim as my invention is 1. In a power driven machine, a reciprocatory carriage having a longitudinally ex-' tending slot therein, a die member carried by" the carriage, and means for actuating the carriage including a rocker extending into said: slot, spaced blocks in the slot, one block abutting one end of the slot, the other block being adapted to be actuated by the rocker for moving the. carriage in one direction, and a safety device for the die located between the spaced blocks including memhere movable transversely of thecarriage,

plates extending between said movable mem hers I and spaced blocks for transmitting thrust from the rocker to the carriage,and a yieldable member for resisting movement of the movable members.

2..The combination with a power driven 'machine havinga movable carriage, of a member securedto said carriage having an opening therethrough, a die having; ashank extending through the opening in said memher, a wedgershaped member movable transe versely'of sa d carriage against the shank of said die for adusti-ng the latter, and means] for-ad usting said wedge shaped member including a pair of spaced headed elementsprojecting from said carriage, a cross bar extending between sa d headed elements and detachably secured thereto, and headed element having a swivel conneet-ion with said; wedge shape member and. threadedly engaging said cross. bar.

of said carriage, a die having a shank ex tending through said plate, a member mov-= able transversely of sa d carri-ageand; en

the said; member, in position.

0. In a power driven; machine, a movable, carriage, a plate secured to the forward end 4. The-combination with a power drivend machine having va movable carriage, of a member secured to said carriage having an opening therethrough, a die having a shank extending through the opening in said member, a wedge shaped member movable transversely of said carriage against the shank of said die for adjusting the latter, and means for adjusting said wedge-shaped member including headed elements projecting from said carriage, tubular spacers adapted to surround said headed elements, a cross bar adapted to rest upon said tubular spacers and provided with hooked end portions for engaging said headed elements, and a headed element having a swivel connection with said wedge-shaped member and threadedly engaging said cross bar.

5. In a power driven machine the combination with a movable carriage, of means for moving said carriage including a driving member, a bolt extending transversely of the carriage, a pair of blocks carried by the bolt, one of said blocks being fixed thereto and the other movable relative thereto, means for-transmitting thrust from the driving member to the carriage including converging plates carried by the carriage and engaging the blooks upon opposite sides of the bolt, and a yieldable member carried by the bolt for resisting the relative movement of said blocks.

6. In a power driven machine, the combination with a movable carriage, of means.

for moving the carriage including a driving member, a bolt extending transversely of said carriage, blocks mounted on the bolt one block being secured to the bolt, means for transmitting thrust from the driving member to the carriage including plates engaging the bloclrs for separating the same and a yieldable member carried by the bolt for resisting the separation of said blocks.

7. In a power driven machine, a reciprocatory carriage having a longitudinally extending slot therein, a die member carried by the carriage and means for actuating the carriage including a rocker extending into said slot, spaced blocks in the slot, one block abutting one end of the slot, the other block being adapted to be actuated by the rocker for moving the carriage in one direction, a bolt extending transversely of the carriage, a pair of blocks carried by the bolt, one of said blocks being fixed thereto and the other movable relative thereto, sets of plates engaging the blocks and converging away from the bolt on opposite sides thereof, one set of plates transmitting thrust from one of the first mentioned spaced blocks to the blocks carried by the bolt and the other set of plates transmitting thrust from the other of the first mentioned spaced blocks to the bolt blocks and a spring for normally holdingsaid plates in position.

8. In a power driven machine, a reciprocatory carriage having a longitudinal extending slot therein, a die member carried by the carriage and means for actuating the carriage including a rocker extending into said slot, spaced blocks in the slot, one block abutting one end of the slot, the other block being adapted to be actuated by the rocker for moving the carriage in one direction, a bolt extending transversely of the carriage, a pair of blocks carried by the bolt, one of said blocks being fixed thereto and the other movable relative thereto, a set of angularly disposed plates interposed between the blocks carried by the bolt and one of the first mentioned spaced block, and a spring for normally holding said plates in position.

In testimony whereof I affix my signature.

HOWARD o. vANoE. 

